Educational apparatus.



H. ALLIOT. A

EDUCATIONAL APPARATUS.

APPLIGATIONHLBD JUNI: 25, 1912.

1,054,890. v l Patented Mar. 4, 1913.

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WASHINGTON E;

UNITED STATES PATENT oEEIoE- v HECTOR ALLIOT, F LS ANGELES, CALIFORNIA.

EDUCATIONAL APPARATU S.

Specication of Letters Patent.

Patented Mar. et, 1913.

Application led .Tune 25, 1912. Serial No. 705,871.

To all whomz't may concern.'

Be it known that I, HECTOR ALLIo'r, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Educational Apparatus, of

` which the following is a specification..

This invention is designed to obviate the diiiculties of finding cities,towns, stars or other l named places on geographical' and` astronomical maps and charts; and consists .of the combination with a map or chart of a graduated quadrant or other `arc in fixed relation to the map or chart, a graduated rule in movable relation to the arc and the map or chart, and an index list comprising names of places indicated `on the map or chart and two characters foreach name,' one indicating a point on the rule and the other indicating the point on the arc` at which the rule will cross the arcwhen lsaid point on the rule is adjacent the named place on the map.

The invention may be carried out in various ways and the graduated `are may ber located at diiierent parts of the map or chart and may be 0f any extent to accommodate the conditions of the map.

- The invention comprises a map provided with variously located names of places, a graduated and numbered. are and an index to such places, said, index containing the names of the places accompanied with numbers corresponding to the numbers of the arc which are in line between the named kplaces respectively and the center from which the arc is inscribed.

It also includes the combination with a map having named places thereon, of a numbered rule in pivotal relation to the map or chart and corresponding numbers on the rule and index, the numbers on the index being adjacent the'names thereon that designate places on the map which the correapplied with a graduated arc forming a semi-circle applied to the `l`middle of one ,margin of a map or chart.

The'map or chartll is provided with the usual markings 2, 3, indicating the places and the names thereof upon the map.

4 designates the graduated arc extending part way around the center 5 on which th graduated rule Gispivoted; said arc being marked with characters 7 in numerical order being marked with the graduations 9 and their characters 10 in numerical order indieating measurements along the rule. The index 11 is made up of thenames 12 of places on the .map or chart preferably arranged in alphabetical order each-name beeach being accompanied by'two reference characters 13,'14 corresponding respectively to characters on the graduated arc and rule; the graduation onthe arc thus referred to by the index character 13 at any name in the index being the graduation. at which the on the rule indicated by the other index when the rule is adjusted to the indicated arc graduation, the indicated rule' graduation will be near the indicatedfplace onthe map.

'The graduated arc may be applied to the map in anyway. In some instances it is printed thereon and in other instances it is printed on some other subst-ance, 'such as paper, cardboard, metal orsome translucent the map by anysuitable means so as to be in rule may bemade of the same or any other suitable material. lThe extent of the arc wil-l depend upon the location it occupies relative to the places onv the map. If located in the corner of the map a quadrant will be sulicient. If located at the middle of one margin of the map a semi-circle may be required as shown at 41 in Fig. 3.

bined index map or chart iand nder will first ascertain from the index the uadrant and rule graduations pertaining to t e place it is desired to nd, as for instance, in Fi s. 1 andv2, to find the town of Edmundston t e index shows the arc number to be 1 andthe rule number to be 85. Having ascertained rule will cross the arc when the graduation character 14 is adjacent the place on thel map indicated by the index name; so thatA material as celluloid applied to and held on' In practical use a person usin the com? to indicate the graduations 8; and the rule 6 y ingthat of a named place on the map and Y appropriate fixed relation thereto, and the I .or charts, and the manner of use will be pract-ically the same in any instance.

By frequent use the user may become so accustomed to the angle indicated on the arc that he will find it unnecessary to consult the quadrant,y but will simply note the index and the marking on the rule and by swinging-the rule to the approximate angle will be able to readily locate the desired point. Consequently, it would not be adeparture from the broad spirit of this invention to omit from the map and index the actual markings foijthe arc, provided the index cont-ain reference characters for the rule, with or without characters that may be understood as indicating a certain angle with relation to the center on which the rule i is pivoted. In case all reference to the angle or arc numbers be omitted from the inap or Vchart and index, then the user will note on the index and rule the rule number of the place and will swing t-he ruleon its pivot Enti] such place is reached by the rule num- The facility of finding the place is 'increased by the use of thea-rc numbers in the index and map. It is also understood that by printing or otherwise fixing the graduated arc on the map and providing van index 4referring to the graduationslsubstant-ially `as set forth and to graduations on any rule, say for instance, a yard stick, it is not necessary to pivot a special rule' on the map; the measurement being easily made under direction from thearc by a standard rule. The rule 6,1nay be a tape fastened to the Ipublications and in the case of atlases or other books may be applied in the manner of an ordinary ribbon bookmark and thus be made to serve for a plurality of maps or chart-s contained in one binding. The numbers on the index, the arc and the rule ,or either of them may be in the form of any character -of ordinals alphabetical or arithmetical as desired.

I claim:

1. An educational apparatus comprising an indexed map or chart having a graduated arc in xed relation thereto; a graduated rule in movable relation to the arc; the index comprising names of places indicated on the map or chart and two characters for eachname, one indicating a point on the rule and the other indicating the point on the arc at which the rule will cross the arc when said point on the rule is adjacent the named place on the map or chart. 2. A map or chart provided with named places and also with a graduated and numbered arc and an index; said index comprising names of said places and numbers accompanying the names respectively to indicate the arc graduations respectively that are between the arc center and the named places respectively.

3. A map or chart having an arc graduated and numbered printed thereupon for/f the specific purpose of locating places, cities or stars. y

4. A map or chart having an arc graduated and numbered arranged thereupon for the specific purpose of 4locating places, cities, stars or other objects; and a rule'graduated and numbered and pivoted at the center of the arc to coperate therewith for the said purpose.

5. A map provided with afgraduated and numbered arc and with indications of the locations of places on the map, a rule in pivotal relation to the map from the center of said arc, said rule being graduated and the `graduations numbered, and an index.

containing the names of places on thev map or chart and also containing numbers to indicate a point at which toe lace the rule on the arc for the purpose o finding said place and also/the number on/the rule at which said place will be found when the vrule is placed as indicated relative to the arc. n

In testimony whereof, I have hereunto set my 'hand at Los Angeles, California, this 20th day of June, 1912.

Y HECTOR ALLIOT.

In presence of JAMES R. TowNsEND, L. BELLE Rica. 

